[arch-ports] PPC office/aspell-*

[Harley]

It appears as though no dictionaries for aspell have been packaged for
the PPC port. They should be very trivial (at least the en was by adding
arch=(ppc)) to get working. Once I figure out how much time I'm going to
have this semester. I may start putting this MacMini to good use. For
now, I'll have to settle with just using ArchLinux on the PowerPC
instead of helping the project.